The integral symbol U+222B in the math font does not stretch properly.

[apoorvpotnis]

The integral symbol U+222B in the math font does not stretch properly like other math fonts, when creating a big integral symbol using the following trick described in the documentation of the New Computer Modern fonts.

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{LibertinusMath-Regular.otf}
\begin{document}
	\[
	        \Uleft \Udelimiter 0 0 "222B
	        \begin{pmatrix}
		        1\\2\\3\\4\\5\\6\\7\\8\\9\\10\\11\\12\\13\\14\\15\\16\\17\\18\\19\\20
	        \end{pmatrix}
	        \Uright.
	\]
\end{document}

The following is what we get in the Concrete-Math.otf font.

[apoorvpotnis]

I am using Daniel Flipo's concmath-otf math font (`\usepackage[concrete]{fontsetup}`). And yes, the integral is really too big in the example I gave, but it certainly looks usable for somewhat bigger sizes than the original U+222B glyph---say upto the sizes provided by the mt2pro package.

…

On Sun, 16 Jul 2023 at 23:48, Herbert Voß ***@***.***> wrote: I cannot see it with Concrete Math and up-to-date TL23. However, such a big integral looks wrong to me. — Reply to this email directly, view it on GitHub <#541 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALTDEZDOL5KM2N4N57YPUL3XQQV7VANCNFSM6AAAAAA2MAN7FQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Apoorv Potnis

[apoorvpotnis]

\documentclass{article}
\usepackage[concrete]{fontsetup}
% \setmathfont{LibertinusMath-Regular.otf}
\begin{document}
	\[
	\Uleft \Udelimiter 0 0 "222B
	\begin{pmatrix}
		1\\2\\3\\4\\5\\6\\7\\8\\9\\10\\11\\12\\13\\14\\15\\16\\17\\18\\19\\20
	\end{pmatrix}
	\Uright.
	\]
\end{document}

This is my code for the concrete example.

[apoorvpotnis]

Yes, many. Concmath-otf, Xcharter-otf, Erewhon-otf (Fourier-otf), Stix2, NewCM, GFS Neohellenic, all TeX Gyre fonts have it. XITS does not have it. ‪On Wed, 6 Dec 2023 at 13:57, ‫خالد حسني (Khaled Hosny)‬‎ < ***@***.***> wrote:‬

…

This is the first time I see stretched integral to be honest, is there any other font that does this? — Reply to this email directly, view it on GitHub <#541 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALTDEZHC5MTL7HSBGAZRTPLYIAT7XAVCNFSM6AAAAAA2MAN7FSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNBSGQYTMNJZGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Apoorv Potnis